diff --git a/Sources/SwiftDriver/ExplicitModuleBuilds/ExplicitDependencyBuildPlanner.swift b/Sources/SwiftDriver/ExplicitModuleBuilds/ExplicitDependencyBuildPlanner.swift
index b54371946..6bddfd1e0 100644
--- a/Sources/SwiftDriver/ExplicitModuleBuilds/ExplicitDependencyBuildPlanner.swift
+++ b/Sources/SwiftDriver/ExplicitModuleBuilds/ExplicitDependencyBuildPlanner.swift
@@ -219,7 +219,6 @@ public typealias ExternalTargetModuleDetailsMap = [ModuleDependencyId: ExternalT
       // The only required input is the .modulemap for this module.
       // Command line options in the dependency scanner output will include the
       // required modulemap, so here we must only add it to the list of inputs.
-      inputs.append(moduleMapPath)
       let cacheKeys : [TypedVirtualPath : String]
       if let key = moduleDetails.moduleCacheKey {
         cacheKeys = [moduleMapPath: key]
@@ -276,11 +275,7 @@ public typealias ExternalTargetModuleDetailsMap = [ModuleDependencyId: ExternalT
       let clangModulePath =
         TypedVirtualPath(file: moduleArtifactInfo.clangModulePath.path,
                          type: .pcm)
-      let clangModuleMapPath =
-        TypedVirtualPath(file: moduleArtifactInfo.clangModuleMapPath.path,
-                         type: .clangModuleMap)
       inputs.append(clangModulePath)
-      inputs.append(clangModuleMapPath)
     }
 
     // Swift Main Module dependencies are passed encoded in a JSON file as described by
@@ -445,11 +440,7 @@ public typealias ExternalTargetModuleDetailsMap = [ModuleDependencyId: ExternalT
       let clangModulePath =
         TypedVirtualPath(file: moduleArtifactInfo.clangModulePath.path,
                          type: .pcm)
-      let clangModuleMapPath =
-        TypedVirtualPath(file: moduleArtifactInfo.clangModuleMapPath.path,
-                         type: .clangModuleMap)
       inputs.append(clangModulePath)
-      inputs.append(clangModuleMapPath)
     }
 
     // Return if depscanner provided build commands.
diff --git a/Tests/SwiftDriverTests/CachingBuildTests.swift b/Tests/SwiftDriverTests/CachingBuildTests.swift
index 177080282..e328faced 100644
--- a/Tests/SwiftDriverTests/CachingBuildTests.swift
+++ b/Tests/SwiftDriverTests/CachingBuildTests.swift
@@ -56,13 +56,9 @@ throws {
       for command in extraCommandLine {
         XCTAssertTrue(job.commandLine.contains(.flag(command)))
       }
-    case .clang(let clangModuleDetails):
-      let moduleMapPath =
-        TypedVirtualPath(file: clangModuleDetails.moduleMapPath.path,
-                         type: .clangModuleMap)
+    case .clang(_):
       XCTAssertEqual(job.kind, .generatePCM)
       XCTAssertEqual(job.description, "Compiling Clang module \(moduleId.moduleName)")
-      XCTAssertTrue(job.inputs.contains(moduleMapPath))
     case .swiftPrebuiltExternal(_):
       XCTFail("Unexpected prebuilt external module dependency found.")
     case .swiftPlaceholder(_):
@@ -167,11 +163,7 @@ private func checkCachingBuildJobDependencies(job: Job,
     let clangDependencyModulePathString = dependencyInfo.modulePath.path
     let clangDependencyModulePath =
       TypedVirtualPath(file: clangDependencyModulePathString, type: .pcm)
-    let clangDependencyModuleMapPath =
-      TypedVirtualPath(file: clangDependencyDetails.moduleMapPath.path,
-                       type: .clangModuleMap)
     XCTAssertTrue(job.inputs.contains(clangDependencyModulePath))
-    XCTAssertTrue(job.inputs.contains(clangDependencyModuleMapPath))
     XCTAssertTrue(job.commandLine.contains(
       .flag(String("-fmodule-file=\(dependencyId.moduleName)=\(clangDependencyModulePathString)"))))
     XCTAssertTrue(job.commandLine.contains(
diff --git a/Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift b/Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift
index f0763a926..2d365d088 100644
--- a/Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift
+++ b/Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift
@@ -50,13 +50,9 @@ throws {
         }
         XCTAssertTrue(job.commandLine.filter {$0 == .flag("-candidate-module-file")}.count == compiledCandidateList.count)
       }
-    case .clang(let clangModuleDetails):
-      let moduleMapPath =
-        TypedVirtualPath(file: clangModuleDetails.moduleMapPath.path,
-                         type: .clangModuleMap)
+    case .clang(_):
       XCTAssertEqual(job.kind, .generatePCM)
       XCTAssertEqual(job.description, "Compiling Clang module \(moduleId.moduleName)")
-      XCTAssertTrue(job.inputs.contains(moduleMapPath))
     case .swiftPrebuiltExternal(_):
       XCTFail("Unexpected prebuilt external module dependency found.")
     case .swiftPlaceholder(_):
@@ -88,11 +84,7 @@ private func checkExplicitModuleBuildJobDependencies(job: Job,
     let clangDependencyModulePathString = dependencyInfo.modulePath.path
     let clangDependencyModulePath =
       TypedVirtualPath(file: clangDependencyModulePathString, type: .pcm)
-    let clangDependencyModuleMapPath =
-      TypedVirtualPath(file: clangDependencyDetails.moduleMapPath.path,
-                       type: .clangModuleMap)
     XCTAssertTrue(job.inputs.contains(clangDependencyModulePath))
-    XCTAssertTrue(job.inputs.contains(clangDependencyModuleMapPath))
     XCTAssertTrue(job.commandLine.contains(
       .flag(String("-fmodule-file=\(dependencyId.moduleName)=\(clangDependencyModulePathString)"))))
     XCTAssertTrue(job.commandLine.contains(